Presentation
Can Lossy Compression Benefit NVMe-Based I/O?
DescriptionLossy compression is widely used to reduce storage costs and I/O demands, especially on SCSI-HDDs. However, its benefits diminish on NVMe-SSDs, where compression and decompression runtimes often exceed raw I/O speed. To address this, we conduct a detailed study of compression runtimes, control methods, and NVMe parameters. We find that existing error-bounded methods fail to optimize compression ratios, and serial pipelines remain inefficient. With the low-level NVMe driver SPDK, we take a systematic approach to evaluating the limitations within implementing lossy-compressed I/O for NVMe-SSDs and expose numerous observations towards motivating our design.
Event Type
Research and ACM SRC Posters
TimeTuesday, 18 November 20258:00am - 5:00pm CST
LocationSecond Floor Atrium
Archive
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